Pipe-wrench.



B. F. ADAMS.

PIPE WRENCH.

APPLICATION man NOV. 17. 1915.

Patented May 23,1916.

awuzmtoz I5. F. A DAMS THE COLOMBIA PLANOGRAPH co.. wAsHmG'roN, D. c

FTQ

. BENJAMIN F. ADAMS, OF STRATFORI), TEXAS. I

PIPE-WRENCH.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed November 17, 1915. Serial No. 61,956. i

To all whom it may concern:

Be it known that I, BENJAMIN F. ADAMs, a citizen of theUnited States,residing at Stratford, in the county of Sherman and State of Texas, haveinvented certain new and useful Improvements in Piperenches, of whichthe following is a specification, reference being had to theaccompanying drawings.

My invention relates to wrenches, and particularly to the type of wrenchillustrated in my prior Patent No. 1,095,616, granted to me May 5, 1914,the particular object of the invention being to improve upon my priorpatent by the provision of means whereby the movable jaw shall beadjustable along the length of the wrench shank so as to thereby adjustthe device to d-iiferent sizes of work;

A further object of the invention is to improve upon the constructionillustrated in my prior patent by providing means whereby it may beadjusted quickly.

Other objects will appear in the course of i the following description.

' My invention is illustrated in the accompanying drawings, wherein:

Figure 1 is an elevation of my improved wrench, some of the parts beingin section; Fig. 2 is a top plan viewyFig. '3 is a perspective view ofthe movable jaw; Fig. l is a perspective view of the spring; Fig. 5 is aperspective view of the latch.

Referring to these figures, designates the handle of a wrench which atone end is formed to provide the hook-shaped jaw 11, the inner face ofwhich is provided with teeth 12. This shank is longitudinally slotted,as at 13, and upon one edge of the shank is provided with the ratchetteeth 14:.

Pivotally mounted upon the shank is a movable jaw designated generally15. This jaw is transversely U-shaped in configuration and embraces theshank'lO and is held to the shank by a pivot bolt 16 which passesthrough the slot 13. The extremity of the jaw is curved and formed withteeth 17 'coacting with the teeth of the fixed jaw. Also pivotallymounted upon the pivot bolt 16 is a latch member illustrated in detailin Fig. 5 and designated generally 18. This latch member comprises abody or solid portion 19 having laterally disposed arms 20 and laterallydisposed arms 21 extending at right angles to the arms20. The arms 20are laterally offset at their extremities so that they can pass over therearwardly exwith the bolt 16.

Slidably. mounted upon the shank 10 is a spring 22. This spring extendsapproximately parallel to the shank and at one extremity is formed withthe T-shaped head 23. The opposite end of the spring is angularly bentand formed with a collar 24 which embraces the shank 10 and is movabletherealong. The shank 10 is formed w th outwardly projecting ears 25 anda pm 26 extends across these cars and bears frictionally against thespring 22. This provides for shifting the spring in accord ance with theadjustment of the movable aw. The pressure on the movable jaw when thewrench is being used causes the spring 22 to bind against the pin 26 andupon the shank 10 so as to hold the spring in its adjusted position. Butwhen the wrench is not in use the spring may be readily shifted by handalong the extent of the shank. As will be noted from Fig. 1, the portion19 or body of the latch 18 is formed to provide a tooth 27 which isengageable with any one of the notches or teeth 14, so as to hold thelatch in its adjusted position.

In the practical use of my invention the latch 18 is released from itsengagement with the teeth 14: and shifted longitudinally, which willshift the movable jaw toward or from the fixed jaw. The latch is thenreengaged with the corresponding notch or tooth 14 and the fixed jaw isheld from further movement. At the same time the spring 22 is caused tolongitudinally slide so as to bring the spring in proper position withrelation to the movable jaw. This improvement renders my wrench readilyadjustable to various sizes of work and this adjustment is very simpleand may be very quickly made. I have found it extremely effective inpractice, and furthermore, the wrench may be cheaply made and sold.

Having described the invention, what I claim is:

1. A wrench of the character described including a shank having a fixedjaw and being longitudinally slotted, a jaw having a pivot memberpassing through the slot of the shank whereby the jaw is rendered longitudinally adjustable along the shank, means connected with the pivotof the movable for holding it in adjusted position 'but permitting freemovement of the jaw on its pivot, and a spring bearing against themovable jaw and urging it toward the shank.

2. A. wrench of the character described including a shank having a fixedjaw and .beinglongitudinally slotted, a jaw having 3. A wrench of thecharacter described including a shank having at one end afixed jawandbeing longitudinally slotted, a pivot pin passing through the slot ofthe shank,

a movable jaw pivotally mounted upon said pivot pin and thereby mountedfor. oscillationand longitudinal adjustment, a latch mountedupon thepivot pin and operatively engaging with the shank to hold the pivot pinin adjusted position, and a spring longitudinally adjustable upon theshank and having its free end engaging with the. said movable jaw tourge it toward the shank.

4. A wrench or" the character described including a shank longitudinallyslotted, intermediate its ends and having'a fixed jaw formed thereon atone. end, a bifurcated.

movable embracing the shank, a pivot pin passing through said jaw andthrough the slot, a latching member havingarms at one end embracing theshank and the piv- V otal end of the movable jaw and connected I V tothe pivot thereof, the other 'end of the latch member being bifurcatedto embrace the shank, a tooth formedupon said'latch member, theshankbeing formed with teeth with which said latching tooth is adaptedto engage to hold the movable jaw in adjusted position, and alongitudinally adjustable spring mounted upon the shank and havmg itsfree end engaging w th said movable aw -to urge it toward'the shank- Intestimony whereof I hereunto affix my signature in the presence of twowitnesses. BENJAMIN'F. ADAMS.

Witnesses: o r

I L.- M. PRICE,

J. T. BROWN.

0091a: 01 this patent may be obtained for live cents each, by addressingthe (Commissioner of Patents,

Washington, D. C." I I

